Utilization of expanded clay aggregates in sustainable lightweight geopolymer concrete
- PDF / 1,915,601 Bytes
- 13 Pages / 595.276 x 790.866 pts Page_size
- 116 Downloads / 211 Views
ORIGINAL ARTICLE
Utilization of expanded clay aggregates in sustainable lightweight geopolymer concrete Ankur Bhogayata1 · Shemal V. Dave1 · Narendra K. Arora2 Received: 10 December 2019 / Accepted: 29 May 2020 © Springer Japan KK, part of Springer Nature 2020
Abstract The lightweight sustainable construction composites prepared with the waste materials are enormously utilized for the construction activities. The geopolymer concrete (GPC) has emerged as the sustainable construction composite and holds potential to get modified as the lightweight composite. To confirm the sustainability attributes and feasibility of the lightweight material for the strength adequacy, the lightweight geopolymer concrete (LWGPC) was prepared with the expanded clay aggregates (ECA) is evaluated for density, compressive strength, splitting tensile strength, impact resistance and the ultrasonic pulse velocity response. The sustainability attributes of LWGPC were evaluated by the environment impact assessment (EIA). The objective was to ensure the feasibility of the LWGPC for the lightweight construction applications and the impacts of the composite on the environment. The results showed significant reduction of the density of the composite due to the ECA (0–100% by weight of the natural aggregates). With the replacement of the natural aggregates up to 50% the composite performed fairly well for all the test conditions. The EIA explorations of LWGPC over the GPC showed clear advantages of energy efficiency, reduced CO2 emission on manufacturing and adequate strength properties of the new composite. Keywords Lightweight geopolymer concrete · Expanded clay aggregates · Mechanical strength · UPV response · Impact resistance · Environmental impact assessment
Introduction In the past few decades, the development of the sustainable construction materials has emerged as the primary research area for the construction industry. Replacement of the conventional cement by fly ash along with alkaline solution resulting in the binder termed as geopolymer has emerged as one of the sustainable options to prepare the concretes. The geopolymer concrete (GPC) resembles the conventional concrete in many ways including strength and durability properties. Some recent developments have shown that the * Ankur Bhogayata [email protected] Shemal V. Dave [email protected] Narendra K. Arora [email protected] 1
Department of Civil Engineering, Marwadi University, Rajkot, Gujarat 360003, India
Applied Mechanics Department, Government Engineering College, Bharuch, Gujarat, India
2
GPC is found capable of producing better strength to the cement concrete [1]. However, the density of GPC is found similar to the cement concrete. Therefore, the explorations are required to prepare lightweight geopolymer concrete (LWGPC) by replacement of the natural aggregates. There are few references dealing with the preparation of LWGPC in fact. Recycled lightweight concrete aggregates have been used to reduce the self-weight of GPC. The density was obs
Data Loading...
